LELK1-1RS4-30452-40

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The LELK1-1RS4-30452-40 circuit breaker provides common protection for low-voltage, three-phase electrical systems. It has two main functions; short circuit and overload protection. The rated short-circuit capability of this breaker is up to 25 kA. The rated overload capacity is up to 40A. The switchgear is designed for maximum versatility, making it suitable for diverse applications.

Application Field

The LELK1-1RS4-30452-40 is suitable for applications in a variety of industries, including industrial and commercial buildings, airports, railway stations, tunnels, watering systems, and power plants. It is also suitable for industries involving hazardous environments, such as mining and oil and gas production. Additionally, this switchgear can be used in marine applications as well as marine electrical systems.

Working Principle

The LELK1-1RS4-30452-40 circuit breaker works on the principle of thermal overload protection. This means that when the pre-set current limit is exceeded, the trip latch inside the breaker will be triggered, causing the breaker to open and thereby cutting off the power supply. This trip latch is equipped with a bimetallic strip which warms up during a short circuit or an overload situation. When the strip reaches a certain temperature, it operates the trip latch which swings the mechanism and opens the contact points in the breaker.

In addition to thermal overload protection, this circuit breaker also provides protection against short-circuit and power overloads, as well as over current and magnetic trips. The breaker utilizes an insulated window switch test system to detect and trip on arc flashes and prevent power surges. When any of the preset limits is exceeded, the trip switch will cause the contact points to open and cut off the power supply.

The LELK1-1RS4-30452-40 also features a manual override system which can be used to manually cut off the power supply. The manual override system is equipped with an illuminated status indicator which lets the user know if the breaker is in the on or off state. This feature is beneficial in cases where circuit breakers may be inaccessible due to environmental conditions or location.

Reliability

The LELK1-1RS4-30452-40 circuit breaker is designed for reliable operation and enhanced safety in any low-voltage power system. The switchgear is tested to meet or exceed all industry standards, including UL 977 and NEMA AB-1. Additionally, it comes with a rugged and durable casing that is designed to withstand even the harshest conditions, ensuring long-term reliability.

The LELK1-1RS4-30452-40 circuit breaker is designed for easy installation and maintenance. The switchgear can be installed quickly and efficiently, requiring no special tools or wiring. Additionally, maintenance can be performed quickly and easily using readily available materials.

The LELK1-1RS4-30452-40 circuit breaker provides maximum versatility and reliability for applications in virtually any low-voltage, three-phase electrical system. Its thermal overload protection, short-circuit and overload protection, as well as over current and magnetic trips provide reliable protection against power surges and dangerous power scenarios. In addition, its manual override system and rugged casing allow for easy installation and maintenance for long-term reliability.

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